Patents by Inventor Keith Maile

Keith Maile has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080021289
    Abstract: An implantable medical device is adapted for implantation into body tissue. The implantable medical device comprises a housing and a header coupled to the housing. A cavity is located in the header. An ultrasonic transducer adapted to transmit acoustic waves at a communication frequency is located in the cavity, and a coupling surface is interposed between the ultrasonic transducer and the body tissue and is acoustically coupled with the body tissue.
    Type: Application
    Filed: July 20, 2007
    Publication date: January 24, 2008
    Applicant: CARDIAC PACEMAKERS, INC.
    Inventors: Cheng Zhang, Thomas Piaget, Abhijeet Chavan, Keith Maile, Ron Balczewski
  • Publication number: 20080015652
    Abstract: An implantable medical device includes a dual-use sensor such as a single accelerometer that senses an acceleration signal. A sensor processing circuit processes the acceleration signal to produce an activity level signal and a heart sound signal. The implantable medical device provides for rate responsive pacing in which at least one pacing parameter, such as the pacing interval, is dynamically adjusted based on the physical activity level. The implantable medical device also uses the heart sounds for pacing control purposes or transmits a heart sound signal to an external system for pacing control and/or diagnostic purposes.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 17, 2008
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: Keith Maile, Krzysztof Siejko
  • Publication number: 20070250126
    Abstract: A system and method for waking up an implantable medical device (“IMD”) from a sleep state in which power consumption by the IMD is essentially zero. The IMD may be adapted to perform one or more designated measurement and/or therapeutic functions. In one embodiment, the IMD includes a wake-up sensor that is adapted to sense the presence or absence of a wake-up field generated by another IMD or an external device. The wake-up field may, in some embodiments, be an electromagnetic field, a magnetic field, or a physiologically sub-threshold excitation current (i.e., E-field). Upon sensing by the wake-up sensor of the wake-up field, other components of the IMD, which may include a controller, a sensing and/or therapy module, and/or a communications module, are awakened to perform one or more designated functions.
    Type: Application
    Filed: April 25, 2006
    Publication date: October 25, 2007
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: Keith Maile, Abhijeet Chavan, Jeffrey Von Arx, Cheng Zhang
  • Publication number: 20070208390
    Abstract: An apparatus and method is presented for an implanted sound sensor wirelessly communicating with an implantable medical device, or with an external monitoring device. The second sensor may be located inside a blood vessel anchored by an expandable stent like device, and may be drug coated. The sound sensor may be a solid-state microphone having a unidirectional characteristic and may be aimed at a selected portion of the heart, lung, or other location. There may be a network of sound sensors forming a local area network with the implantable medical device. The information from the sound sensor may be analyzed, filtered, transformed, compared to a standard and stored in the implantable device, or it may be passed on to an external location. The results of the analysis may be use to initiate a closed-loop treatment by the implantable medical device, such as cardiac pacing or defibrillation.
    Type: Application
    Filed: March 1, 2006
    Publication date: September 6, 2007
    Inventors: Jeffrey Von Arx, Abhi Chavan, Keith Maile
  • Publication number: 20070179532
    Abstract: One embodiment of the present subject matter includes an apparatus including a non-thin-film battery, the apparatus including a cylindrical implantable housing, electronics disposed in the implantable housing, and a battery disposed in the implantable housing, the battery comprising: a stack including at least one substantially planar anode having a thickness greater than 1 micrometer and at least one substantially planar cathode having a thickness greater than 1 micrometer, a housing enclosing the stack of substantially planar anodes and cathodes, and terminals interconnecting the battery and the electronics, wherein the battery has a volume of less than 0.024 cubic centimeters. The present subject matter includes an implantable medical device having a bobbin battery.
    Type: Application
    Filed: December 15, 2006
    Publication date: August 2, 2007
    Applicant: CARDIAC PACEMAKERS, INC.
    Inventors: Michael Root, Nick Youker, Keith Maile
  • Publication number: 20070170887
    Abstract: A system and method for charging a rechargeable battery or capacitor in one implantable device using a charger located in a second implantable device is provided. One aspect of this disclosure relates to a system for charging a rechargeable component. The system includes at least one satellite implantable medical device, the satellite device including at least one rechargeable component. The system also includes a master implantable medical device adapted to communicate with the at least one satellite device. The master device includes a primary battery and a charger adapted to connect to the primary battery. The charger in the master device is adapted to charge the rechargeable component in the satellite device. The charger can charge the rechargeable component wirelessly, according to various embodiments. Other aspects and embodiments are provided herein.
    Type: Application
    Filed: December 15, 2006
    Publication date: July 26, 2007
    Applicant: CARDIAC PACEMAKERS, INC.
    Inventors: Robert Harguth, Keith Maile, Michael Root
  • Publication number: 20070156197
    Abstract: The present subject matter includes an apparatus for positioning in an implant site which includes a hermetically sealed shell having an exterior shaped as a function of hydrodynamic drag at the implant site, turbulence at the implant site, fluid sheer stress at the implant site, and stagnation at the implant site; electronics disposed in the hermetically sealed shell and a power source disposed in the hermetically sealed shell.
    Type: Application
    Filed: December 15, 2006
    Publication date: July 5, 2007
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: Michael Root, Nick Youker, Benjamin Fruland, Keith Maile, Robert Harguth
  • Publication number: 20070156205
    Abstract: An embodiment of a system for gathering physiologic data related to a human body includes a sensor device implanted in the human body, an inductive coil communicably coupled to the implanted sensor device; and a manager device in communication with the implanted sensor device via the inductive coil. The coil may be wrapped around the sensor device or attached to the sensor device fixation. An embodiment of a method for gathering physiologic data related to a physiologic parameter in a human body includes communicably coupling an inductive coil to communication circuitry of an implantable medical device (IMD), deploying the inductive coil and the IMD into a vessel of the human body, and inducing current in the inductive coil via the communication circuitry, the current representative of data associated with the IMD.
    Type: Application
    Filed: January 5, 2006
    Publication date: July 5, 2007
    Inventors: Dennis Larson, Cheng Zhang, Keith Maile, Abhi Chavan
  • Publication number: 20070150019
    Abstract: A battery management circuit provides an implantable medical device with power management that allows safe and efficient use of a rechargeable battery. Various ways of monitoring the energy level of the rechargeable battery and controlling the battery recharging process for user convenience and safety are provided.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 28, 2007
    Applicant: CARDIAC PACEMAKERS, INC
    Inventors: Nick Youker, Robert Harguth, Keith Maile, Michael Root, Cheng Zhang, Abhi Chavan, Paul Huelskamp
  • Publication number: 20070115277
    Abstract: Methods, systems, and apparatus are described for posture detection. Orientations of a body are detected with respect to first and second axes. A movement of the body with respect to a third axis is also detected. Three-dimensional orientations of the body are determined based on the orientations and the movement. The detected posture may be used for applications such as controlling medical devices and detecting patient disorders.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 24, 2007
    Inventors: Hua Wang, John Hatlestad, Keith Maile
  • Publication number: 20070049977
    Abstract: An implantable medical device (IMD) is adapted for detecting acoustic chest sounds. The IMD includes a pulse generator having a compartment, the compartment defining an isolated cavity bounded by a back wall. A diaphragm is disposed over and encloses the cavity. An acoustic sensor adapted to sense chest sounds and generate a signal is disposed between the diaphragm and the back wall. The IMD also includes a control circuit disposed within the pulse generator. The circuit is operatively coupled to the acoustic sensor and is adapted to receive the signal.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 1, 2007
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: Jeffrey Von Arx, Keith Maile, Abhi Chavan
  • Publication number: 20060161070
    Abstract: A system to monitor heart sounds. The system comprises an implantable heart sound sensor operable to produce an electrical signal representative of at least one heart sound, a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, an implantable posture sensor operable to produce an electrical signal representative of a patient's posture, and a controller circuit, coupled to the heart sound sensor interface circuit and the posture circuit. The controller circuit is operable to measure at least one heart sound in correspondence with at least one sensed patient posture.
    Type: Application
    Filed: January 18, 2005
    Publication date: July 20, 2006
    Inventors: Krzysztof Siejko, Keith Maile
  • Publication number: 20060025699
    Abstract: A system for determining a patient's posture by monitoring heart sounds. The system comprises an implantable medical device that includes a sensor operable to produce an electrical signal representative of heart sounds, a sensor interface circuit coupled to the sensor to produce a heart sound signal, and a controller circuit coupled to the sensor interface circuit. The heart sounds are associated with mechanical activity of a patient's heart and the controller circuit is operable to detect a posture of the patient from a heart sound signal.
    Type: Application
    Filed: July 28, 2004
    Publication date: February 2, 2006
    Inventors: Keith Maile, Krzysztof Siejko
  • Publication number: 20050275382
    Abstract: A charge consumption measuring circuit is disclosed which is particularly suitable for use in an implantable cardiac device. The circuit utilizes the power conversion cycles of an inductive switching regulator to measure the quantity of charge supplied by a battery and/or drawn by the circuitry of the device.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 15, 2005
    Inventors: Nicholas Stessman, Keith Maile
  • Publication number: 20050102001
    Abstract: An implantable medical device includes a dual-use sensor such as a single accelerometer that senses an acceleration signal. A sensor processing circuit processes the acceleration signal to produce an activity level signal and a heart sound signal. The implantable medical device provides for rate responsive pacing in which at least one pacing parameter, such as the pacing interval, is dynamically adjusted based on the physical activity level. The implantable medical device also uses the heart sounds for pacing control purposes or transmits a heart sound signal to an external system for pacing control and/or diagnostic purposes.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 12, 2005
    Inventors: Keith Maile, Krzysztof Siejko
  • Patent number: 6836350
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: December 28, 2004
    Assignees: T-Networks, Inc., AMCC
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer
  • Patent number: 6825964
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: November 30, 2004
    Assignees: T-Networks, Inc., AMCC
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer
  • Publication number: 20040169907
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 2, 2004
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer
  • Publication number: 20030090774
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 15, 2003
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer